파트넘버.co.kr FA5311 데이터시트 PDF


FA5311 반도체 회로 부품 판매점

Bipolar IC For Switching Power Supply Control



Fuji Electric 로고
Fuji Electric
FA5311 데이터시트, 핀배열, 회로
FA531XFA531X series series
FA5310BP(S), FA5314P(S), FA5316P(S)
FA5311BP(S), FA5315P(S), FA5317P(S)
s Description
The FA531X series are bipolar ICs for switching power supply
control that can drive a power MOSFET.
These ICs contain many functions in a small 8-pin package.
With these ICs, a high-performance and compact power
supply can be created because not many external discrete
components are needed.
s Features
• Drive circuit for connecting a power MOSFET
• Wide operating frequency range (5 to 600kHz)
• Pulse-by-pulse overcurrent limiting function
• Overload cutoff function (Latch or non-protection mode
selectable)
• Output ON/OFF control function by external signal
• Overvoltage cutoff function in latch mode
• Undervoltage malfunction prevention function
• Low standby current (90µA typical)
• Exclusive choices by circuits (See selection guide on page 25)
• 8-pin package (DIP/SOP)
s Applications
• Switching power supply for general equipment
Bipolar IC
For Switching Power Supply Control
s Dimensions, mm
SOP-8
8
5
14
6.05
0.4±0.1 1.27±0.2
DIP-8
8
5
0.6
1 9.3 4
1.5
s Block diagram
FA5310BP(S)/FA5311BP(S)/FA5316P(S)/FA5317P(S)
2.54±0.25 0.5±0.1
0~15˚
7.6
0.3 +–00.1.05
0~15˚
Pin Pin
No. symbol
1 RT
2 FB
3 IS (+)
4 GND
5 OUT
6 VCC
7 CT
8 CS
Description
Oscillator timing resistor
Feedback
Overcurrent (+) detection
Ground
Output
Power supply
Oscillator timing capacitor
Soft-start and ON/OFF control
FA5314P(S)/FA5315P(S)
Pin Pin
No. symbol
1 RT
2 FB
3 IS (–)
4 GND
5 OUT
6 VCC
7 CT
8 CS
Description
Oscillator timing resistor
Feedback
Overcurrent (–) detection
Ground
Output
Power supply
Oscillator timing capacitor
Soft-start and ON/OFF control
1


FA5311 데이터시트, 핀배열, 회로
FA531X series
s Selection guide
Type
FA5310BP(S)
FA5311BP(S)
FA5314P(S)
FA5315P(S)
FA5316P(S)
FA5317P(S)
Max. duty Polarity of overcurrent
UVLO (typ.)
Max. output Application
cycle (typ.) detection
ON threshold
OFF threshold current
46%
70%
46%
+
+
16.0V
16.0V
15.5V
8.70V
8.70V
8.40V
1.5A
1.5A
1.5A
Forward type
Flyback type
Forward type
70%
46%
70%
+
+
15.5V
15.5V
15.5V
8.40V
8.40V
8.40V
1.5A
1.0A
1.0A
Flyback type
Forward type
Flyback type
s Absolute maximum ratings
s Recommended operating conditions
Item
Symbol
Rating
Supply voltage
VCC
31
Output current
FA5310/11/14/15
FA5316/17
Feedback terminal input voltage
Overcurrent detection
terminal input voltage
IO
VFB
VIS
±1.5
±1.0
4
–0.3 to +4
CS terminal input current
Total power dissipation
(Ta=25°C)
Operating temperature
Junction temperature
ICS
Pd
Topr
Tj
2
800 (DIP-8) *1
550 (SOP-8) *2
–30 to +85
125
Storage temperature
Tstg
–40 to +150
Notes:
*1 Derating factor Ta > 25°C : 8.0mW/°C (on PC board )
*2 Derating factor Ta > 25°C : 5.5mW/°C (on PC board )
Unit
V
A
V
V
mA
mW
°C
°C
°C
Item
Supply voltage
Oscillator timing resistance
FA5310/11
FA5314/15/16/17
Soft-start capacitor
Oscillation frequency
Symbol Min. Max.
VCC 10 30
RT
CS
fOSC
3.3 10
1 10
0.1 1
5 600
Unit
V
k
µF
kHz
s Electrical characteristics (Ta=25°C, Vcc=18V, fOSC=135kHz)
Oscillator section
Item
Oscillation frequency
Frequency variation 1 (due to supply voltage change)
Frequency variation 1 (due to temperature change)
Symbol
fOSC
fdV
fdr
Test condition
RT=5.1k, CT=360pF
VCC=10 to 30V
Ta=–30 to +85°C
Min.
125
Typ.
135
±1
±1.5
Max.
145
Unit
kHz
%
%
Pulse width modulation circuit section
Item
Feedback terminal source current
Input threshold voltage (Pin 2)
Maximum duty cycle
Symbol
IFB
VTH FBO
VTH FBM
DMAX
Test condition FA5310/14/16
FA5311/15/17
Unit
Min. Typ. Max. Min. Typ. Max.
VFB=0
–660 –800 –960 –660 –800 –960 µA
Duty cycle =0%
0.75
0.75 V
Duty cycle =DMAX
1.80
2.30 V
43 46 49 66 70 74 %
Soft-start circuit section
Item
Charge current (Pin 8)
Input threshold voltage (Pin 8)
Symbol
ICHG
VTH CSO
VTH CSM
Test condition
Pin 8=0V
Duty cycle =0%
Duty cycle =DMAX
FA5310/14/16
FA5311/15/17
Unit
Min. Typ. Max. Min. Typ. Max.
–15 –10 –5 –15 –10 –5 µA
0.90 0.90 V
1.90 2.30 V
2




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